Return-Path: Received: from fed1rmmtao11.cox.net ([68.230.241.28] verified) by logan.com (CommuniGate Pro SMTP 4.2) with ESMTP id 363184 for flyrotary@lancaironline.net; Thu, 12 Aug 2004 22:54:01 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.28; envelope-from=daveleonard@cox.net Received: from davidandanne ([68.111.224.107]) by fed1rmmtao11.cox.net (InterMail vM.6.01.03.02.01 201-2131-111-104-103-20040709) with SMTP id <20040813025329.DJK24286.fed1rmmtao11.cox.net@davidandanne> for ; Thu, 12 Aug 2004 22:53:29 -0400 From: "DaveLeonard" To: "Rotary motors in aircraft" Subject: RE: [FlyRotary] Re: DeltaT Coolant was : [FlyRotary] Re: coolant temps Date: Thu, 12 Aug 2004 19:53:30 -0700 Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_005B_01C480A6.0AF129C0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2910.0) In-Reply-To: X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1441 Importance: Normal This is a multi-part message in MIME format. ------=_NextPart_000_005B_01C480A6.0AF129C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Well, blighmy, blow me down. Who woulda thunk? Thanks Ed. Just for fun, maybe we should all start start measuring our heat in Stone*Furlongs. Excellent! Or perhaps the power of our 13B's as Stone Furlongs/ hour glass. Just to sound like we have been doing this since they built stone hinge. :) BTW, 10 deg delta seems about right judging by the typically slow rate of rise of our water temperatures. If there were a 100 deg delta, I would expect coolant to hit 200 shortly after take off. Instead, it takes a good 20 min to settle in, even at climb power. Dave Leonard Right you are, Dave Below is one semi-official definition of BTU in English units. 1 BTU is amount of heat to raise 1 lb of water 1 degree Fahrenheit. So with Tracy's 30 gpm flow of water = 240 lbs/min. Since its temperature is raised 10 degree F we have BTU = 240 * 10 * 1 = 2400 BTU/min I know I'm ancient and I should move into the new metric world, but at least I didn't do it in Stones and Furlongs {:>) Ed The Columbia Encyclopedia, Sixth Edition. 2001. British thermal unit ------=_NextPart_000_005B_01C480A6.0AF129C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Well, blighmy, = blow me=20 down.  Who woulda thunk?  Thanks Ed.  Just for fun, maybe = we=20 should all start start measuring our heat in Stone*Furlongs. =20 Excellent!  Or perhaps the power of our 13B's as Stone Furlongs/ = hour=20 glass.  Just to sound like we have been doing this since they built = stone=20 hinge.  :)
 
BTW, 10 deg = delta seems=20 about right judging by the typically slow rate of rise of our water=20 temperatures.  If there were a 100 deg delta, I would expect = coolant to hit=20 200 shortly after take off.  Instead, it takes a good 20 min to = settle in,=20 even at climb power.
 
Dave=20 Leonard
Right you are, Dave
 
Below  is one semi-official = definition of BTU=20 in English units.  1 BTU is amount of heat to raise 1 lb of water = 1=20 degree Fahrenheit.  
 
So with Tracy's 30 gpm flow of water =3D 240=20 lbs/min.  Since its temperature is raised 10 degree F we=20 have
 
BTU =3D 240 * 10 * 1 =3D 2400 = BTU/min
 
I know I'm ancient and  I should = move into the=20 new metric world, but at least I didn't do it in Stones and Furlongs=20 {:>)
 
Ed
 
The Columbia Encyclopedia, Sixth=20 Edition.  2001.
 
British = thermal=20 unit
 
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